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High-superficial-area porous adsorption material and preparation method and application of high-superficial-area porous adsorption material

A porous adsorption material and high surface area technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of high cost, unsatisfactory realization of the third step, etc., and achieve easy preparation and low density , large size effect

Inactive Publication Date: 2015-03-25
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such multi-step physicochemical processes lead to high costs, and the realization of the third step is often suboptimal

Method used

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  • High-superficial-area porous adsorption material and preparation method and application of high-superficial-area porous adsorption material
  • High-superficial-area porous adsorption material and preparation method and application of high-superficial-area porous adsorption material
  • High-superficial-area porous adsorption material and preparation method and application of high-superficial-area porous adsorption material

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Effect test

Embodiment 1

[0035] Glyceryl ether polystyrene alkylated PEI (referred to as PEIPS, the structure see figure 1 , figure 1 In , PEI has an average of 232 repeating units, only a few are drawn for clarity) as a stabilizer. Among them, 30% of the amino hydrogen of PEI (product of Aldrich Company, molecular weight 10000) is alkylated by glyceryl ether polystyrene (PS, molecular weight 1900). The compound was synthesized according to literature (Wan DC, Yuan JJ, Pu HT. Macromolecules 2009, 42, 1533).

[0036] The oil phase is composed of styrene St, divinylbenzene DVB, toluene, AIBN initiator and PEIPS, and the specific composition is: St / DVB: 60% (St / DVB=8:2), toluene: 30%, PEIPS: 10% ; AIBN: 1% of the mass of the oil phase. Another 9 times the volume of water (composed of phosphate buffer (0.01M) solution, pH 7.4) was taken, and the water phase was dropped into the oil phase under vigorous stirring of the oil phase. Stirring was continued for several minutes after the drop was complete, a...

Embodiment 2

[0038] The PEI amphiphile as a stabilizer was prepared by the reaction of PEI and 1,2-epoxy-9-decene. PEI (1 gram, product of Aldrich Company, molecular weight 10000) and 1,2-epoxy-9-decene (2.5 grams) were stirred in chloroform for 30 hours, and the chloroform was distilled off to obtain a highly viscous liquid. Similar to Example 1, the high-viscosity amphiphile is used instead of PEIPS, and a porous high-surface material can be obtained similarly.

Embodiment 3

[0039] Embodiment 3: the purification treatment of the wastewater containing anionic dye

[0040]Taking the anionic dye methyl orange as an example, make it into a concentration of 2.5×10 -5 M solution (6 milliliters, UV absorbance is about 1), add a small piece of porous material (0.2 gram) that embodiment 1 makes, after standing for 2 days, utilize UV-Vis spectrometry to measure residual absorbance (if necessary, water phase Concentrated and then determined). According to the Lambert-Beer law and the molar absorptivity of the dye, the test shows that the residual concentration of methyl orange in water is 1.5×10 -7 M. Cutting the adsorbent, it can be found that the color of the adsorbent gradually becomes lighter from the outside to the inside, indicating that the material is open-pored. Cutting the adsorbent into small pieces can speed up the adsorption process to some extent. Adsorption treatment was similarly performed on Rose Red RB, Potato Red EB, Eosin EY, Bromophe...

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Abstract

The invention relates to a high-superficial area porous adsorption material and a preparation method and application of the high-superficial-area porous adsorption material. The method comprises the following steps: mixing 1-10 parts of a PEI amphipathic body, 30-70 parts of olefin / alkadiene, 10-30 parts of a pore-foaming agent and 1 part of a radical initiator as an oil phase; dropping water, which is equal to 8-9 times of volume of the oil phase, and of which the pH is 7-9 into the oil phase under stirring, so as to form emulsion; further stirring, and then hatching at 60-80 DEG C for 5-24 hours; and washing with low alcohols so as to obtain porous solid, and drying, so as to obtain the high-superficial area porous adsorption material. Compared with the prior art, the porous adsorption material disclosed by the invention can adsorb anionic organic matter such as various dyes and phenol in water, so that the typical residual concentration is respectively reduced to below millionth. Due to small density and large size, the high-superficial area porous adsorption material can be easily separated out from water; and the adsorbent can be regenerated through alkali treatment.

Description

technical field [0001] The invention belongs to the field of adsorption functional materials and water purification, and in particular relates to a high surface area porous adsorption material and its preparation method and application. Background technique [0002] According to statistics, 1.2 billion people in the world lack safe water, and about 3,900 children die every day from diseases transmitted by water and human waste, and more people are suffering from water-based pollutants. In the future, as the Arctic glaciers recede, the flow of several important rivers in Asia may be reduced, and 1.5 billion people will be affected. At the same time, industrialization, urbanization and population growth will intensify the strain on clean water. It is imperative to develop water purification technology, especially water treatment technology with low investment, low operating cost and easy promotion. [0003] There are many types of water pollutants, which are transmitted to h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C08F283/00C08J9/28
CPCY02W10/37B01J20/26C02F1/285C08F283/00C08J9/28C08J2351/08
Inventor 万德成叶永连冯燕燕
Owner TONGJI UNIV
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